linux/tools/perf/perf.h
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   1#ifndef _PERF_PERF_H
   2#define _PERF_PERF_H
   3
   4struct winsize;
   5
   6void get_term_dimensions(struct winsize *ws);
   7
   8#if defined(__i386__)
   9#include "../../arch/x86/include/asm/unistd.h"
  10#define rmb()           asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
  11#define cpu_relax()     asm volatile("rep; nop" ::: "memory");
  12#define CPUINFO_PROC    "model name"
  13#ifndef __NR_perf_event_open
  14# define __NR_perf_event_open 336
  15#endif
  16#endif
  17
  18#if defined(__x86_64__)
  19#include "../../arch/x86/include/asm/unistd.h"
  20#define rmb()           asm volatile("lfence" ::: "memory")
  21#define cpu_relax()     asm volatile("rep; nop" ::: "memory");
  22#define CPUINFO_PROC    "model name"
  23#ifndef __NR_perf_event_open
  24# define __NR_perf_event_open 298
  25#endif
  26#endif
  27
  28#ifdef __powerpc__
  29#include "../../arch/powerpc/include/asm/unistd.h"
  30#define rmb()           asm volatile ("sync" ::: "memory")
  31#define cpu_relax()     asm volatile ("" ::: "memory");
  32#define CPUINFO_PROC    "cpu"
  33#endif
  34
  35#ifdef __s390__
  36#include "../../arch/s390/include/asm/unistd.h"
  37#define rmb()           asm volatile("bcr 15,0" ::: "memory")
  38#define cpu_relax()     asm volatile("" ::: "memory");
  39#endif
  40
  41#ifdef __sh__
  42#include "../../arch/sh/include/asm/unistd.h"
  43#if defined(__SH4A__) || defined(__SH5__)
  44# define rmb()          asm volatile("synco" ::: "memory")
  45#else
  46# define rmb()          asm volatile("" ::: "memory")
  47#endif
  48#define cpu_relax()     asm volatile("" ::: "memory")
  49#define CPUINFO_PROC    "cpu type"
  50#endif
  51
  52#ifdef __hppa__
  53#include "../../arch/parisc/include/asm/unistd.h"
  54#define rmb()           asm volatile("" ::: "memory")
  55#define cpu_relax()     asm volatile("" ::: "memory");
  56#define CPUINFO_PROC    "cpu"
  57#endif
  58
  59#ifdef __sparc__
  60#include "../../arch/sparc/include/asm/unistd.h"
  61#define rmb()           asm volatile("":::"memory")
  62#define cpu_relax()     asm volatile("":::"memory")
  63#define CPUINFO_PROC    "cpu"
  64#endif
  65
  66#ifdef __alpha__
  67#include "../../arch/alpha/include/asm/unistd.h"
  68#define rmb()           asm volatile("mb" ::: "memory")
  69#define cpu_relax()     asm volatile("" ::: "memory")
  70#define CPUINFO_PROC    "cpu model"
  71#endif
  72
  73#ifdef __ia64__
  74#include "../../arch/ia64/include/asm/unistd.h"
  75#define rmb()           asm volatile ("mf" ::: "memory")
  76#define cpu_relax()     asm volatile ("hint @pause" ::: "memory")
  77#define CPUINFO_PROC    "model name"
  78#endif
  79
  80#ifdef __arm__
  81#include "../../arch/arm/include/asm/unistd.h"
  82/*
  83 * Use the __kuser_memory_barrier helper in the CPU helper page. See
  84 * arch/arm/kernel/entry-armv.S in the kernel source for details.
  85 */
  86#define rmb()           ((void(*)(void))0xffff0fa0)()
  87#define cpu_relax()     asm volatile("":::"memory")
  88#define CPUINFO_PROC    "Processor"
  89#endif
  90
  91#ifdef __mips__
  92#include "../../arch/mips/include/asm/unistd.h"
  93#define rmb()           asm volatile(                                   \
  94                                ".set   mips2\n\t"                      \
  95                                "sync\n\t"                              \
  96                                ".set   mips0"                          \
  97                                : /* no output */                       \
  98                                : /* no input */                        \
  99                                : "memory")
 100#define cpu_relax()     asm volatile("" ::: "memory")
 101#define CPUINFO_PROC    "cpu model"
 102#endif
 103
 104#include <time.h>
 105#include <unistd.h>
 106#include <sys/types.h>
 107#include <sys/syscall.h>
 108
 109#include "../../include/linux/perf_event.h"
 110#include "util/types.h"
 111#include <stdbool.h>
 112
 113struct perf_mmap {
 114        void                    *base;
 115        int                     mask;
 116        unsigned int            prev;
 117};
 118
 119static inline unsigned int perf_mmap__read_head(struct perf_mmap *mm)
 120{
 121        struct perf_event_mmap_page *pc = mm->base;
 122        int head = pc->data_head;
 123        rmb();
 124        return head;
 125}
 126
 127static inline void perf_mmap__write_tail(struct perf_mmap *md,
 128                                         unsigned long tail)
 129{
 130        struct perf_event_mmap_page *pc = md->base;
 131
 132        /*
 133         * ensure all reads are done before we write the tail out.
 134         */
 135        /* mb(); */
 136        pc->data_tail = tail;
 137}
 138
 139/*
 140 * prctl(PR_TASK_PERF_EVENTS_DISABLE) will (cheaply) disable all
 141 * counters in the current task.
 142 */
 143#define PR_TASK_PERF_EVENTS_DISABLE   31
 144#define PR_TASK_PERF_EVENTS_ENABLE    32
 145
 146#ifndef NSEC_PER_SEC
 147# define NSEC_PER_SEC                   1000000000ULL
 148#endif
 149
 150static inline unsigned long long rdclock(void)
 151{
 152        struct timespec ts;
 153
 154        clock_gettime(CLOCK_MONOTONIC, &ts);
 155        return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
 156}
 157
 158/*
 159 * Pick up some kernel type conventions:
 160 */
 161#define __user
 162#define asmlinkage
 163
 164#define unlikely(x)     __builtin_expect(!!(x), 0)
 165#define min(x, y) ({                            \
 166        typeof(x) _min1 = (x);                  \
 167        typeof(y) _min2 = (y);                  \
 168        (void) (&_min1 == &_min2);              \
 169        _min1 < _min2 ? _min1 : _min2; })
 170
 171static inline int
 172sys_perf_event_open(struct perf_event_attr *attr,
 173                      pid_t pid, int cpu, int group_fd,
 174                      unsigned long flags)
 175{
 176        return syscall(__NR_perf_event_open, attr, pid, cpu,
 177                       group_fd, flags);
 178}
 179
 180#define MAX_COUNTERS                    256
 181#define MAX_NR_CPUS                     256
 182
 183struct ip_callchain {
 184        u64 nr;
 185        u64 ips[0];
 186};
 187
 188struct branch_flags {
 189        u64 mispred:1;
 190        u64 predicted:1;
 191        u64 reserved:62;
 192};
 193
 194struct branch_entry {
 195        u64                             from;
 196        u64                             to;
 197        struct branch_flags flags;
 198};
 199
 200struct branch_stack {
 201        u64                             nr;
 202        struct branch_entry     entries[0];
 203};
 204
 205extern bool perf_host, perf_guest;
 206extern const char perf_version_string[];
 207
 208void pthread__unblock_sigwinch(void);
 209
 210#include "util/target.h"
 211
 212struct perf_record_opts {
 213        struct perf_target target;
 214        bool         call_graph;
 215        bool         group;
 216        bool         inherit_stat;
 217        bool         no_delay;
 218        bool         no_inherit;
 219        bool         no_samples;
 220        bool         pipe_output;
 221        bool         raw_samples;
 222        bool         sample_address;
 223        bool         sample_time;
 224        bool         sample_id_all_missing;
 225        bool         exclude_guest_missing;
 226        bool         period;
 227        unsigned int freq;
 228        unsigned int mmap_pages;
 229        unsigned int user_freq;
 230        u64          branch_stack;
 231        u64          default_interval;
 232        u64          user_interval;
 233};
 234
 235#endif
 236
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